Dictionary.net

• The part of the wing-like membrane of bats carried on the metacarpals and the phalanges.

1920 - A dictionary of scientific terms.
By Henderson, I. F.; Henderson, W. D.

• [Greek] The part of the wing-like membrane of bats which is carried on metacarpals and phalanges.

1920 - A dictionary of scientific terms (6th edition)
By J.H. Kenneth